Stereotyping-press



(No Model.) 2 Sheets-Sheet 1. Wn J. EGAN. STBREOTYPING PRESS.

No. 526,148. Patented Sept'. 1'8, 1894'.v

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W. J. BGAN.

STBRBOTYPING PRESS. y No. 526,148. Patented-Sept. 18, 1894.

NUNrrED STATES PATENT Gwinn.

VILLIAM J. EGAN, OFMILVAUKEE, VISCONSIN.

STEREOTYPING-PRESS.

SPECIFICATION forming part of Letters atent No. 526,148, dated September18, 1894.

Application mea `May 24., 1893.

To all whom, it may concer-n..-

Be it known that I, VILLIAM J. EGAN, a citizen of the United States, anda resident of Milwaukee, in the county of Milwaukee, and in the State ofWisconsin, have invented certain new and useful Improvements inStereotyping; and do hereby declare that the following is a full, clear,and exact description thereof.

My invention has for its object to eect a saving of time and labor inthe production of papier-macheJ stereotype molds; and it consists in acertain peculiar method and apparatus hereinafter described withreference to the accompanying drawings and subsequently claimed.

In the drawings, Figure 1 represents a vertical longitudinal section ofa machine constructed according tomy invention for the carrying out ofmy improved method of making papier-mache stereotype-molds, the sectionbeing taken on line l-l of the third figure; Fig. 2, an under side viewof the lifting or platen portion of the machine, the same having partsthereof broken away to better illustrate the construction; Fig. 3, asection taken on line 3--3 of Fig. 1, and Figt a similar view taken online 4-4 of the preceding figure.

Referring by letter to the drawings, A represents the stationary portionof my apparatus in the form of a cast-metal stand, herein shown ascomprising a series of parallel vertically disposed strengthening ribs band a chamber c, thelatter inclosing continuations d of the ribs. Thesecontinuations of the ribs are cut away at suitable intervals to formpassages e for the circulation of steam admitted to the chamber cthrough a pipe B and exhausted therefrom through another pipe C thesepipes being shown in Fig.`1, as preferably provided with steamcontrolling valves, the latter being of any suitable construction, andaccessible through openings in the sides of the stand. This provisionfor steam-heatingof thevstand is made as a matter of convenience ratherthan necessity, as gas or other fuel may be utilized for the samepurpose. The stand is designed as a support for typeforms and is made inthe manner above specified in order to obtain the requisite strengthSerial No.\4=75,310. (No model.)

` to withstand the pressure that is exerted thereon in the mannerhereinafter set forth.

The strengthening ribs b of the stand Aextend in opposite directionstherefrom alternate with like ribs f on a platen-plate D, and at oneside of the machine a pintle E loosely engages these alternate ribs tothereby form a hinge for a platen-plate, certain ribsof the latter beingprovided with rod-like extensions g for counter-weights E', a portion ofone of these counter-weights being shown in Fig. 1. At the other side ofthe machine the ribs of the stand and platen-plate have suitableregistering openings for engagement with a detachable bar F that servesto lock said platenplate in a horizontal position when the opera` tionof making a stereotype-mold takes place.

A continuous ledge D on the under side of the platen-plate is providedwith a series of depending screw-threaded pins h that engage a sheet Gof rubber or other suitable yielding fluid-proof material and aclamp-frame H, the latter being held in place against the fluidproofmaterial by means of nuts i run on said pins, whereby I provide acompartment j having an entrance in the form of a slot `k in saidplaten-plate. Cast with the platen-plate is a cylinder I transverse tothe ribs f and parallel to the slot lc with which it communicates, andas herein shown valve-controlled fluid inlet and outlet nipplescommunicate with the compartment j above specified, the inlet nipplebeing for detachable connection with a hose or other conveyer leadingfrom asource of fluid supply. Extending into the cylinder I through asuitable stuiii ng box .I in which it has its bearings is a screw-rod Kprovided at its outer end with a hand-wheel L or other suitableactuating device. Engaging the screw-rod K is the tapped head of ahollow cylindrical plunger L this head being shown as preferablyconsisting of a screw-plug M having interior threads matching` those onthe rod. The plunger is of such diameter as to leave a water-space mbetween itself and the cylinder I, and said plunger has ports n adjacentto the head that engages the screwrod. The plunger also extends througha gland O at the rear end of the cylinder and has its outer headpreferably in the form of a screw-plug N, as best illustrated in Fig. 3.4

said plunger along the screw-threads.

type-mold. The plunger portion of the platen is run out on the adjustingscrew and water or other liuid admitted to said platen to fill all theexisting space therein, the undue strain that would otherwisesubsequently come upon said plunger being equalized by the volume offluid admitted thereto through the ports above specified, and by theseports I prevent the backing up of the fluid against said screw,

.as would be the case were said ports omitted and said Huid found itsway into the afore- The iiuid inlet and outlet nipples being closed theplaten is swung up on its hinge and a form of type positioned on thestand. A moist papier-mache matrix is now placed on the typeform andblanketed in the usual manner after which the platen is swung down toits horizontal position and locked in place, the yielding fluid-proofportion of said platen being in contact with the uppermost matrixblanket. The screw-rod is now actuated to exert a draw on the plungerportion of the platen and as this plunger gradually approaches towardthe operator there is a corresponding displacement of the iiuid in thevcylinder through the slot in the platen-frame into the adjacent lowercompartment thereby causing a proportionate pressure against the matrixon the type, and the yielding lower side of said compartment permits ofa compensation rfor inequalities in the face of the type-form orblankets. erted the matrix is indented to form the By the fluid-pressurethus exstereotype mold and coincident with this operation said mold isdried by heat radiated from the stand. The mold having been completed,the platen is unlocked and again swung up out of the way to permit theremoval of said mold from the type-form.

From theY foregoing it will be seen that I do away with the usualbeatingI in of the matrix prior to the exertion of pressure thereon, andby the direct application of liuidpressure and the yielding nature ofthe pressing surface I avoid mashing of the type-form and otherwiseobtain better results than is usual in the art, while at the same time Imay dry the mold coincident with the impression of the matrix on saidtype-form.

The machine herein described is at present my preferred means forcarrying out my method of making papier-mache stereotype molds, but thismethod contemplates broadly the employment of yielding pressure, eitherhydraulic or pneumatic primarily exerted against the matrix or theblankets laid therel on,these blankets being necessarilyemployed inconnection with the drying of the impressed matrix, but not absolutelyessential to that step in said method that contemplates obtaining theimpression, and hence it is more a matter of convenience than necessityto dry a mold coincident with its formation on a type-form, although bythis step in the .art I effect an additional saving of time and proofmaterial clamped to the ledge, a cylinder on the plate in communicationwith the compartment, a screw extendingthrough one head of the cylinder,a plunger movable on the screw through the other errd of said cylinder;and suitable means for introducing fluid to the space within saidplaten, substantially as set forth.

2. A stereotype-machine consisting of a suitable stand, suitable meansfor heating the same, a platen embodying a plate having a dependingcontinuous ledge bounding a compartment, a sheet of yielding fluid-proofmaterial clamped to the ledge, a cylinder on the plate in communicationwith the compartment a screw extending through one end of the cylinder,a plunger movable on the screw through the other end of said cylinder,and suitable means for introducing fluid to the space within saidplaten, substantially as set forth.

3. A stereotype-machine consisting of a suitable stand, a platenembodying a plate having a depending continuous ledge bounding acompartment, a sheet of yielding fluidproof material clamped to theledge, a cylinder on the plate, in communication with the compartment, ascrew extending through one end of the cylinder, and a hollow plungermovable on the screw through the other end IIO of said cylinder andprovided with ports communicating therewith; andsuitable means forintroducing fluid to the space within said platen, substantially as setforth.

4:. Astereotypiug-machine comprisingastationary stand for the support oftype-forms, a hollow platen hinged to the stand and having an under faceof flexible fluid-proof material, suitable means for locking the platenin its working position, and other suitable means for exerting{luid-pressure within said platen, substantially as set forth.

5. A stereotyping machine comprising a suitable stand, a hollow platenhaving an under face of flexible fluid-proof material, a cylinder on theplaten in communication with the interior of the same, a screw extendingthrough one head of the cylinder, a plunger movable on the screw throughthe other en d suitable stand, suitable means for heating of saidcylinder, and suitable means for inof said cylinder, and fluid conveyersleading troducing fluid into said platen, substantially into saidplaten, substantially as set forth. as set forth. In testimony that Iclaim the foregoing I 6. A stereotyping machine comprising a havehereunto set my hand, at Milwaukee, in I 5 the county of Milwaukee andState of Wlsthe stand, a hollow platen having an under consin, in thepresence of two Witnesses. face of fiexible Huid-proof material, acylinder on theplaten in communication with the interior of the same, ascrew extending through one head of the cylinder, a plunger movable onthe screw through the other end WM. J. EGAN. Witnesses:

N. E. -OLIPHANT, HENRY DANKERT.

